Particulates, coronavirus and greenhouse gases

His interest in the link between tropical bird breeding and cancer has expanded to the health risks of the intensive rearing of poultry, pigs and cattle for consumption. Artificial breeding of livestock has increased dramatically since the 1950s. Over the past fifty years, our diet has become increasingly unnatural. More meat products from animals, bred solely for consumption, cause more chronic diseases. An increase that keeps pace with the recent rise in cancer mortality.